Annual report pursuant to Section 13 and 15(d)

Selected Balance Sheet Data - Summary of Net Change in Carrying Value of MSRs (Detail)

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Selected Balance Sheet Data - Summary of Net Change in Carrying Value of MSRs (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Servicing Asset at Amortized Cost, Balance [Roll Forward]    
Beginning balance $ 1,897 $ 2,002
Additions 483 441
Amortization (525) (546)
Ending balance $ 1,855 $ 1,897